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more detail to the fact that LTO mode can fail easily

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This commit is contained in:
van Hauser
2020-03-09 08:33:08 +01:00
parent 36ce9c1fb9
commit 6a6dd84b39
2 changed files with 8 additions and 4 deletions
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9
llvm_mode/README.lto.md
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@ -2,13 +2,16 @@
## TLDR; ## TLDR;
1. Use afl-clang-lto/afl-clang-lto++ because it is faster and gives better 1. This compile mode is very frickle if it works it is amazing, if it fails
- well use afl-clang-fast
2. Use afl-clang-lto/afl-clang-lto++ because it is faster and gives better
coverage than anything else that is out there in the AFL world coverage than anything else that is out there in the AFL world
2. You can use it together with llvm_mode: laf-intel and whitelisting 3. You can use it together with llvm_mode: laf-intel and whitelisting
features and can be combined with cmplog/Redqueen features and can be combined with cmplog/Redqueen
3. It only works with llvm 9 (and likely 10+ but is not tested there yet) 4. It only works with llvm 9 (and likely 10+ but is not tested there yet)
## Introduction and problem description ## Introduction and problem description

3
llvm_mode/afl-clang-fast.c
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@ -610,7 +610,8 @@ int main(int argc, char** argv, char** envp) {
callname, BIN_PATH, BIN_PATH, LLVM_VERSION, LLVM_BINDIR); callname, BIN_PATH, BIN_PATH, LLVM_VERSION, LLVM_BINDIR);
if (strcmp(callname, "afl-clang-lto") == 0) if (strcmp(callname, "afl-clang-lto") == 0)
SAYF("Compiled with linker target \"%s\" and LTO flags \"%s\"\n", SAYF("Compiled with linker target \"%s\" and LTO flags \"%s\"\n\n"
"If anything fails - be sure to read README.lto.md!\n\n",
AFL_REAL_LD, AFL_CLANG_FLTO); AFL_REAL_LD, AFL_CLANG_FLTO);
SAYF("\n"); SAYF("\n");